Why is my mobile form builder not displaying correctly after liquid change?

Hello

We’ve got a form builder app on our site, and the mobile lead form is not displaying correctly.

I have a feeling this is because of a change I made to the liquid in order to fix functionality on a different widget that wasn’t displaying on mobile.

the change I made was

@media only screen and (max-width: 480px){
iframe {
 height: 100% !important;
}
}

Would this be the cause of my form builder not being correctly formatted now?

Is there a way to fix the current issue, while keeping the old fix as well?

Thanks